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Atty. William DeVinney

Atty. William DeVinney

William DeVinney has a broad litigation practice that includes antitrust, intellectual property, employment, securities and other complex commercial litigation. He has extensive trial experience, both as a member of trial teams and as first chair in jury and bench trials, arbitrations proceedings, and regulatory hearings, and has argued cases before several federal and state appellate courts.

Tysons Tysons 28 yrs experience 28 year
Call (571) 648-1254 Book Appointment

Profile Summary

About William DeVinney at a glance

William DeVinney is an Of Counsel based in Tysons, Virginia, practforg at BrigliaHundley, P.C.. They haand 28+ years of legal experience, licensed to practice since 1998. Admitted to practice in Virginia New York District of Columbia (1998). Educated at Cornell University William & Mary School of Law (โ€”). Serands clients in Tysons, VA and the surrounding metropolitan area.

Verified attorney profile ยท Updated June 2026

About

  • William DeVinney has a broad litigation practice that includes antitrust, intellectual property, employment, securities and other complex commercial litigation
  • He has extensive trial experience, both as a member of trial teams and as first chair in jury and bench trials, arbitrations proceedings, and regulatory hearings, and has argued cases before several federal and state appellate courts
  • Mr. DeVinney also counsels clients about complying with antitrust, privacy, and employment laws, as well as regulatory risks arising from mergers, distributions, licensing, franchise, sales, and other agreements
  • ExperienceMember of a team representing a certified class of dairy farmers located in 14 southeastern states against Dairy Farmers of America, Dean Foods and a number of other defendants in an action alleging violations of sections 1 and 2 of the Sherman Act by unlawfully conspiring to eliminate competition for the marketing, sale and purchase of raw milk in the Southeast
  • The plaintiffs recovered $350,000,000 in damages.Represented a multinational consumer goods company in a consumer class action alleging false advertising
  • The complaint against the client was dismissed with prejudice.Represented a multinational chemical and agricultural biotechnology corporation against a Sherman Act Section 2 claim brought by a competitor alleging that the client had either monopolized or attempted to monopolize the alleged market for transgenic corn seed.Defended a multinational chemical and agricultural biotechnology company accused of monopolizing the market for the transgenic corn seed industry
  • A motion for class certification by the plaintiff was rejected by the trial court and before the Third Circuit on appeal.Represented a multinational technology company in a private antitrust claim brought by a competitor, as well as in investigations brought by the European Union, the Federal Trade Commission and state government enforcement agencies.Defended a former executive of Bankers Trust Corp. in a criminal trial and related Securities and Exchange Commission (SEC) administrative proceedings arising from the alleged improper accounting treatment of unclaimed funds
  • After a six-week jury trial, the client was acquitted of all 36 counts in the indictment and a favorable settlement was reached with the SEC

Jurisdictional Context

Why local counsel matters in Virginia

Practforg law in Virginia. Legal matters in Virginia are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantiand law. Cases originating in Tysons are typically filed in the local municipal court or the appropriate Virginia state district court, depending on subject matter and amount in controversy. An attorney licensed in Virginia brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantiand law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Virginia courts without local counsel or pro hac vice admission.

Looking for additional Virginia attorneys? Browse all attorneys in Tysons or all attorneys in Virginia.

Frequently Asked

Common questions about William DeVinney

Where is William DeVinney's law office located?
William DeVinney's law practice is located in Tysons, Virginia. The firm is BrigliaHundley, P.C.. You can contact the office directly through this profile page.
How long has William DeVinney practiced law?
William DeVinney has 28+ years of legal experience and has been licensed since 1998.
Where did William DeVinney go to law school?
William DeVinney earned their education at (โ€”).
How can I contact William DeVinney for a consultation?
You can contact William DeVinney directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.

Education

โ€”
Cornell University William & Mary School of Law
- In Progress

Bar Admissions

Virginia New York District of Columbia
Admitted: 1998

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